I have no idea if I had an emotional midlife crisis in my 40s because other major life crises, of the tragedy type, were front stage.
My 40s was a hell of a roller coaster...first 9/11 and my Mom's passing due to undetected BC (my age 43), then my husband's passing due to a dissecting aortic aneurism (my age 46)...
Add to that w*rk stress and general life BS...damn, no wonder I felt worn out and FIREd at age 48.
I'm 56 now, and feel better than I ever did in the last two decades. FIRE has a lot to do with that of course. Some days I get a little unfocused on where my life has been and is heading today.
Those are the times that I head to my plant growing room, turn on the tabletop fountain, and do something simple and peaceful...I play with my plants.